# Breakout Box — bill of materials

The parts list is the builder's own, as supplied on 2026-09-23. Each line
is reshaped only as far as a table needs, and each is mapped to where it
goes in the box. Nothing is added to it. In particular it carries **no
part numbers, no distributor codes and no prices**, and no
distributor-import file is offered: one would need part numbers this list
does not carry.

| qty | part, as listed | where it goes |
|---|---|---|
| 3 | insulated banana plug posts — 2 red, 1 black ("the ones I used were generic"); they take 4 mm banana plugs | red: **TIP** and **TIP +10k**; black: **SLEEVE** |
| 3 | ¼″ non-isolated TS jacks ("I used a Switchcraft model") | **IN**, **OUT** and **OUT 10k** |
| 1 | 10 k resistor, 1 %, ¼ W | IN's tip to the **TIP +10k** post and **OUT 10k**'s tip |
| — | 22 AWG stranded wire | all point-to-point wiring, and the lid-bond lead |
| 1 | Hammond 1590B enclosure | the box; the enclosure is the common ground |
| 1 | M3 or #4-40 machine screw and nut, for the ground lug | bolts the ground lug inside the lid |
| 1 | M3 or #4 ground lug | the lid end of the lid-bond lead |
| 1 | M3 or #4 star washer | under the ground lug |
| 4 | rubber feet | the underside |

"M3 or #4-40" is kept as written: either works, and the choice is the
builder's.

Why the jacks must be non-isolated is in `build-plan.md`.

## Not recorded

These are stated as not recorded, and nothing here should be read as
filling them in:

- **the jack's model number:** "a Switchcraft model", not identified;
- **the posts' maker:** "generic";
- **the resistor's construction** (metal film or otherwise): not stated;
- **the resistor's measured value:** not measured for this record. Read
  it with the build plan's meter check.